BEvent.h

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/*******************************************************************************
 *  BEvent.h    Event class
 *  T.Barnaby,  BEAM Ltd,   2005-07-08
 *  Copyright (c) 2022 All Right Reserved, Beam Ltd, https://www.beam.ltd.uk
 *  For license see LICENSE.txt at the root of the beamlib source tree.
 *******************************************************************************
 */
#ifndef BEvent_H
#define BEvent_H    1
 
#include <BTypes.h>
#include <BQueue.h>
 
class BEvent {
public:
            BEvent(BUInt32 type = BEventTypeNone, BUInt32 arg = 0);
 
    BUInt32     type();
    BUInt32     arg();
    
private:
    BUInt32     otype;          
    BUInt32     oarg;           
};
 
typedef BQueue<BEvent>  BEventQueue;
 
 
class BEventPipe {
public:
            BEventPipe();
            ~BEventPipe();
            
    void        clear();                
    int     getFd();
 
    BUInt       writeAvailable() const;
    BError      write(const BEvent& event,  BTimeout timeout = BTimeoutForever);    
 
    BUInt       readAvailable() const;
    BError      read(BEvent& event,  BTimeout timeout = BTimeoutForever);       
    
private:
    int     ofds[2];            
};
#endif